Start off summer like you're serious, with art soirees, street fairs and songs to save oceans.

MOCA’s Fresh Summer Party
Cut a $120 check to support the Museum of Contemporary Art, and get invited to a swank open bar (OK, $120 bar) where you'll hobnob with LA’s most talented artists.
Don’t miss: Bid on artwork by notables like John Baldessari, Jeff Koons and Ed Ruscha. You can view the artwork online beforehand, while you're sober.
Sat 7p. MOCA Geffen Contemporary, 152 N. Central Ave. (213-633-5318). Advance ticket $120. Nearby: Water Grill; The Standard Downtown; Mountain Bar

Los Feliz Street Fair
Summer festival season kicks off, featuring LA music acts Mezklah and Shapes of Race Cars, and the return of a seasonal classic: beer and wine gardens.
New this year: Go to the Green Scene pavilion to learn how to throw a big fat green wedding, or cut your energy use at home.
Sun 11a-8p. Vermont Ave., Los Feliz (323-913-0369). Free. Nearby: Cobras & Matadors; Fred 62; Tangier; The Dresden

Culver City Art Walk
Check out the beguiling MODAA space and subversive street art at the Lab 101 among over 40 galleries on this self-guided tour.
Stick around: LACMA Muse hosts an after-party with open bar, light food and DJ grooves.
Sat 12-8p. Culver City (310-253-5716). Free. After-party 8-11p in the H.D. Buttercup showroom, Helms Bakery complex. $22-32. Nearby: Bottlerock; Fraiche; Jazz Bakery; Saints & Sinners

Music/Discussion: First Fridays at Natural History Museum
Indie rock darlings Deerhoof and Autolux headline an offbeat night of music and engaging conversation. Tonight’s topic: the human impact on oceans.
Early birds: Arrive by 5:30p for a private museum tour with the museum’s mollusk man, Angel Valdes.
Fri 5:30-11p. Natural History Museum, 900 Exposition Blvd (213-763-3466). $9 (2-for-1 admission). Nearby: The Bordello; Blue Velvet